nuclear magnetic resonance spectroscopy

Question 1

why are elements with an odd number ofprotons and electrons used

Answer 1

they have a significant nuclear spin

Question 2

what is resonance

Answer 2

with the right combination of a strong magnetic field and radio frequency radiation the nucleus can absorb energy and rapidly flip between the two spin states

Question 3

chmical shift

Answer 3

electrons shift the energy and radio frequency needed for nuclear magnetic resonance to takes place

Question 4

what determines the chemical shift

Answer 4

chemical enviroment

Question 5

what is the name of the reference chemical

Answer 5

tetramethylsilane (TMS)

Question 6

how is NMR spectrometer run

Answer 6

tube is placed inside the spectrometer, wbere it is spun
the sample is given a pulse of radiation containing a range of radio frequencies

Question 7

what are deuterated solvents used for

Answer 7

CDCl3 is comonly used as a solvent
D2O is used to identify alcoholsand NH